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基于泰勒展开边界元法的深水浮体二阶平均漂移力计算

DOI: 10.3969/j.issn.1006-7043.201406006

Keywords: 二阶波浪力, 泰勒展开, 边界元方法, 深水浮体, 柯钦函数, 近场公式, 远场公式

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Abstract:

为了消除传统低阶面元法计算非光滑边界单元处的切向诱导速度精度低的缺点,提出了一阶泰勒展开边界元方法.对边界积分方程中偶极强度在单元内进行泰勒展开,保留一阶导数项,并对边界场点求2个正交方向的切向导数来封闭方程组,从而可同时求解单元中的速度势及其切向速度.数值计算表明,该方法可提高浮体边界拐角处切向速度和水线处波面爬高的计算精度,进而保证浮体二阶平均波浪漂移力的计算精度和收敛性.

References

[1]  HESS J L, SMITH A M O. Calculation of non-lifting potential flow about arbitrary three-dimensional bodies[J]. Journal of Ship Research, 1964, 8: 22-44.
[2]  NEWMAN J N, LEE C H. First and second order wave effects on a submerged spheroid[J]. Journal of Ship Research, 1991,35(3):183-190.
[3]  CHEN X B. Middle-field formulation for the computation of wave-drift loads[J]. Journal of Engineering Mathematics, 2007(59): 61-82.
[4]  戴遗山,段文洋. 船舶在波浪中运动的势流理论[M]. 北京: 国防工业出版社, 2008: 28-35.DAI Yishan, DUAN Wenyang. Potential flow theory of ship motions in waves[M]. Beijing: National Defense Industry Press, 2008: 28-35.
[5]  CHOI Y R, HONG S Y, CHOI H S. An analysis of second-order wave forces on floating bodies by using a higher-order boundary element method[J]. Ocean Engineering, 2000, 28: 117-138.
[6]  TENG B. Second order wave action on 3D floating body[J]. Journal of Hydrodynamics A, 1995, 10(3): 316-327.
[7]  柏威. 非线性波浪与任意三维物体的相互作用 [D]. 大连:大连理工大学,2001: 83-96.BAI Wei. Non-linear wave interaction with arbitrary 3-D bodies[D]. Dalian: Dalian University of Technology, 2001: 83-96.
[8]  SHAO Y L, ALTINSON O M. Use of body fixed coordinate system in analysis of weakly nonlinear wave body problems[J]. Applied Ocean Research, 2010, 32: 20-33.
[9]  DUAN W Y. Taylor expansion boundary element method for floating body hydrodynamics[C]//Proc 27th Intl Workshop on Water Waves and Floating Bodies. Copenhagen, Denmark, 2012.
[10]  CHEN X B. Analytical evaluation of the second-order loads upon a tension leg platform column[Z]. IFP report No.38 739. Rueil-Malmaison, France, 1991.
[11]  ZHU X M. Irregular frequency removal from the boundary integral equation for the wave-body problem[D]. Boston:Massachusetts Institute of Technology, 1994:31-35.

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